leo10.cse.kyutech.ac.jp
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 04:48:26:38:95:d5:ab:92:77:72:a4:b0:d3:9b:b1:e9:eb:68 was issued on by Let's Encrypt.
With 3 subject alternative names this certificate can be used to secure multiple fqdn's. This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=leo10.cse.kyutech.ac.jp
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 04:48:26:38:95:d5:ab:92:77:72:a4:b0:d3:9b:b1:e9:eb:68Serial Number (int): 373000278616820189272938830443054245735272
Serial Number lenght: 139 bits, 18 octets
SubjectKeyId: 3f:41:04:9c:ba:ef:15:dc:d7:b4:b5:5a:ff:0e:9b:ef:86:17:4c:4c
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 25:0d:18:12:7f:32:0f:2e:73:dc:62:9a:e8:24:c2:99:b8:42:6e:04
Fingerprint (sha256): 18:5a:cd:a2:ff:0b:94:ec:99:91:0e:0e:8b:1d:d9:fc:b6:30:e8:bc:3c:89:d1:67:cb:2b:22:f5:a6:3f:ba:83
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.orgCheck the revocation status for certificate leo10.cse.kyutech.ac.jp
3
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for leo10.cse.kyutech.ac.jp
Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
leo10.cse.kyutech.ac.jp
leo11.cse.kyutech.ac.jp
leo50.cse.kyutech.ac.jp
leo11.cse.kyutech.ac.jp
leo50.cse.kyutech.ac.jp
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Certificate
The complete raw certificate details for leo10.cse.kyutech.ac.jp in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIFlzCCBH+gAwIBAgISBEgmOJXVq5J3cqSw05ux6etoMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0yMDAyMjEwODUyMTVaFw0y MDA1MjEwODUyMTVaMCIxIDAeBgNVBAMTF2xlbzEwLmNzZS5reXV0ZWNoLmFjLmpw MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoNZ+Ee8MjoOiO3670e20 YYqKOS31WrRaCxYLy7bYdD9OnlMyvs4GSJ9qGQaUwGjGiEwAE0BRGLcBsuNts1AZ VYcOpnH7AYTlhU+UEzepiZZNAxQHFIUS29XdM8iNxXCA3jkr5N+y1evDUvoXCUZr uF6GPbRbVLYuADi+DnBqP6CMRyzPyvFmC+SA/4kfQTiGBHkVl51pYl0pu0uQIKiN Rj9XQN384sstei7QxTFzi0czC/D9HLZ6hUHP3ONtAeOn7gKxKg3ofIg86pAMOcvF BN/57SRV0dmVPOQpPOg24p50SnNcVW3SFJbZo9pSHdMtqbAgL3jGlhybrrpfpoDv GwIDAQABo4ICnTCCApkwDgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUF BwMBBggrBgEFBQcDAjAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBQ/QQScuu8V3Ne0 tVr/DpvvhhdMTDAfBgNVHSMEGDAWgBSoSmpjBH3duubRObemRWXv86jsoTBvBggr BgEFBQcBAQRjMGEwLgYIKwYBBQUHMAGGImh0dHA6Ly9vY3NwLmludC14My5sZXRz ZW5jcnlwdC5vcmcwLwYIKwYBBQUHMAKGI2h0dHA6Ly9jZXJ0LmludC14My5sZXRz ZW5jcnlwdC5vcmcvMFQGA1UdEQRNMEuCF2xlbzEwLmNzZS5reXV0ZWNoLmFjLmpw ghdsZW8xMS5jc2Uua3l1dGVjaC5hYy5qcIIXbGVvNTAuY3NlLmt5dXRlY2guYWMu anAwTAYDVR0gBEUwQzAIBgZngQwBAgEwNwYLKwYBBAGC3xMBAQEwKDAmBggrBgEF BQcCARYaaHR0cDovL2Nwcy5sZXRzZW5jcnlwdC5vcmcwggEDBgorBgEEAdZ5AgQC BIH0BIHxAO8AdgDnEvKwN34aYvuOyQxhhPHqezfLVh0RJlvz4PNL8kFUbgAAAXBn KXhUAAAEAwBHMEUCIQDrf8Fx06N/uue7/RAvLPU7d2w/naK5nWNh+6gsPNzHEwIg V6K5GscvMzX9zlhj9YjqsGmE4FnL1iypnFUdFKXQnG8AdQCyHgXMi6LNiiBOh2b5 K7mKJSBna9r6cOeySVMt74uQXgAAAXBnKXhUAAAEAwBGMEQCIHQ5BSfTCxLd5pU2 idUeWoclWQa0Lj7W5Mn0wU8h+YM9AiB1vdjeVChEvntvdQJRfh2Nose8qNWPyKAG riZlTTwxyzANBgkqhkiG9w0BAQsFAAOCAQEAZo5K6csZqUS8WbCxEP8BdOv/Hnci RizayvqoVEAVIFye2eBdb91teN6gFXvVbMajeifIy5Rj4L3neW/8m255rePpkpOq 6ejJ8TMSZjKSuBrI9GeqM5bxb9gGWJD4qa/b3ViOanN4CkpAQdUzlNTQFhh4d4G9 7gVNCORe+doUoAIvteA0chMe1zX4zWqDnoGLT130cOuOTezOC9adBQD7svLahU+V 2283HIjdugfAj4f6gIKiK0NgsBCskgXFdQtMq7mp58bnUTnopHB4uWvDIdyXXugl jJ+/ZDEuuWn+/7fPaqhcGmHHYiQfTUC7Ey1NfRYQDO7K9mXAtOTBC/agAg== -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoNZ+Ee8MjoOiO3670e20 YYqKOS31WrRaCxYLy7bYdD9OnlMyvs4GSJ9qGQaUwGjGiEwAE0BRGLcBsuNts1AZ VYcOpnH7AYTlhU+UEzepiZZNAxQHFIUS29XdM8iNxXCA3jkr5N+y1evDUvoXCUZr uF6GPbRbVLYuADi+DnBqP6CMRyzPyvFmC+SA/4kfQTiGBHkVl51pYl0pu0uQIKiN Rj9XQN384sstei7QxTFzi0czC/D9HLZ6hUHP3ONtAeOn7gKxKg3ofIg86pAMOcvF BN/57SRV0dmVPOQpPOg24p50SnNcVW3SFJbZo9pSHdMtqbAgL3jGlhybrrpfpoDv GwIDAQAB -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 373000278616820189272938830443054245735272 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-02-21 08:52:15 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-05-21 08:52:15 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'leo10.cse.kyutech.ac.jp' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20303898969269779892600521512225509436057567077834429009576354081863519894346769055799012071145462260578605166035408232605737548288367929561284588937110826694233946673345541295866872788396441391505973707237463030210770068349214441070381590531308321222182332696180835125142223285824171404120256692874795483001689871534997634121315679006362613806551526841589990174592731370966767693072025507319606417183807224583541979049902508338080700959469164984830053618321998498102002651091309598076120953046872423627678242022799020770536660776055805245248691335144438976548818274792369998269481505114010517011475358215003319627547 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 3f41049cbaef15dcd7b4b55aff0e9bef86174c4c . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (77 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo10.cse.kyutech.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo11.cse.kyutech.ac.jp' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'leo50.cse.kyutech.ac.jp' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes) 00ef007600e712f2b0377e1a62fb8ec90c6184f1ea7b37cb561d11265bf3e0f34bf241546e00000170672978540000040300473045022100eb7fc171d3a37fbae7bbfd102f2cf53b776c3f9da2b99d6361fba82c3cdcc713022057a2b91ac72f3335fdce5863f588eab06984e059cbd62ca99c551d14a5d09c6f007500b21e05cc8ba2cd8a204e8766f92bb98a2520676bdafa70e7b249532def8b905e00000170672978540000040300463044022074390527d30b12dde6953689d51e5a87255906b42e3ed6e4c9f4c14f21f9833d022075bdd8de542844be7b6f7502517e1d8da2c7bca8d58fc8a006ae26654d3c31cb . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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